What is CPC F16F1/328?

CPC F16F1/328 is the Cooperative Patent Classification code for “with undulations, e.g. wavy springs.”

How many patents are filed under CPC F16F1/328 (with undulations, e.g. wavy springs)?

Our database includes 44 publications tagged with this CPC code.

Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).

with undulations, e.g. wavy springs · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F16F1/328
Official title	{with undulations, e.g. wavy springs}
Display label	with undulations, e.g. wavy springs
Total patents	44

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Answers are generated from the same data shown on this page.

What is CPC F16F1/328?: CPC F16F1/328 is the Cooperative Patent Classification code for “with undulations, e.g. wavy springs.”
How many patents are filed under CPC F16F1/328 (with undulations, e.g. wavy springs)?: Our database includes 44 publications tagged with this CPC code.
Is patent activity under CPC F16F1/328 growing?: Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).